YNAO OpenIR  > 大样本恒星演化研究组
The evolution of interacting spiral galaxy NGC 5194
Kang XY(康晓宇)1,2,3; Chang, RX4; Zhang FH(张奉辉)1,2; Cheng LT(程连涛)1,2,3; Wang L(王浪)1,2,3
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2015-05-01
Volume449Issue:1Pages:414-424
DOI10.1093/mnras/stv340
Contribution Rank第1完成单位
Indexed BySCI
KeywordGalaxies: Abundance Galaxies: Evolution Galaxies: Individual: M51a Galaxies: Photometry Galaxies: Spiral
Abstract

NGC 5194 (M51a) is a grand-design spiral galaxy and undergoing interactions with its companion. Here, we focus on investigating main properties of its star formation history (SFH) by constructing a simple evolution model, which assumes that the disc builds up gradually by cold gas infall and the gas infall rate can be parameterizedly described by a Gaussian form. By comparing model predictions with the observed data, we discuss the probable range for free parameter in the model and then know more about the main properties of the evolution and SFH of M51a. We find that the model predictions are very sensitive to the free parameter and the model adopting a constant infall-peak time t(p) = 7.0 Gyr can reproduce most of the observed constraints of M51a. Although our model does not assume the gas infall time-scale of the inner disc is shorter than that of the outer disc, our model predictions still show that the disc of M51a forms inside-out. We find that the mean stellar age of M51a is younger than that of the Milky Way, but older than that of the gas-rich disc galaxy UGC 8802. In this paper, we also introduce a 'toy' model to allow an additional cold gas infall occurred recently to imitate the influence of the interaction between M51a and its companion. Our results show that the current molecular gas surface density, the star formation rate and the UV-band surface brightness are important quantities to trace the effects of recent interaction on galactic star formation process.

Funding ProjectNational Natural Science Foundation of China (NSFC)[11403092] ; National Natural Science Foundation of China (NSFC)[11273053] ; National Natural Science Foundation of China (NSFC)[11033008] ; National Natural Science Foundation of China (NSFC)[11373063] ; Yunnan Foundation[2011CI053] ; NSFC[11373053] ; NSFC[11390373] ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences (CAS)[XDB09010100]
Funding OrganizationNational Natural Science Foundation of China (NSFC)[11403092, 11273053, 11033008, 11373063] ; Yunnan Foundation[2011CI053] ; NSFC[11373053, 11390373] ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences (CAS)[XDB09010100]
Language英语
Subject Area天文学 ; 星系与宇宙学 ; 星系形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
Archive Date2015-04-07
WOS IDWOS:000355345600030
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTAR-FORMATION HISTORY ; HUBBLE-SPACE-TELESCOPE ; (CO)-C-12 2-1 MAP ; NEARBY GALAXIES ; CHEMICAL EVOLUTION ; FORMATION LAW ; ABUNDANCE GRADIENTS ; RADIAL-DISTRIBUTION ; WHIRLPOOL GALAXY ; GALACTIC DISK
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/4597
Collection大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorKang XY(康晓宇)
Affiliation1.Yunnan Observatory, Chinese Academy of Sciences, Kunming, 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650011, China
3.University of Chinese Academy of Sciences, Beijing, 100049, China
4.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Kang XY,Chang, RX,Zhang FH,et al. The evolution of interacting spiral galaxy NGC 5194[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,449(1):414-424.
APA Kang XY,Chang, RX,Zhang FH,Cheng LT,&Wang L.(2015).The evolution of interacting spiral galaxy NGC 5194.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,449(1),414-424.
MLA Kang XY,et al."The evolution of interacting spiral galaxy NGC 5194".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 449.1(2015):414-424.
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